Malicious PDF — malware analysis report

Static analysis result for SHA-256 1abfd959bdbdc902…

MALICIOUS

PDF

82.2 KB Created: 2021-03-18 15:59:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 02990e437ab2a2a3cef8ec5fb0f99251 SHA-1: 0b88a6dbfacc2359670cc060d05698b09fd93d7d SHA-256: 1abfd959bdbdc902f5f05f49f5a49366cd1ceda3e198827b9c1d77445607ea86
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which point to disposable hosting or unknown domains, suggesting a phishing or malware distribution scheme. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports this by indicating the PDF is designed to host many links on potentially untrustworthy sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://jumiwimov.ru/award?keyword=all+types+bearing+skf+pdf PDF link annotation
    • http://lajafago.medianewsonline.com/monster_anticipation_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/miviluwulux/hiihrih/25604972088.pdfIn PDF document text
    • http://xolokeminapi.getenjoyment.net/blue_eyes_technology_free_download.pdfIn PDF document text
    • http://numusuri.22web.org/fexekiwafopeko.pdfIn PDF document text
    • http://rolapisi.scienceontheweb.net/sony_fs700_camera_price.pdfIn PDF document text
    • http://kedugobepuged.mywebcommunity.org/john_the_ripper_brute_force_shadow_file.pdfIn PDF document text
    • https://wubudonujekud.weebly.com/uploads/1/3/4/5/134524452/vimukeluwidil.pdfIn PDF document text
    • https://cdn.sqhk.co/javeduner/did3931/9122524983.pdfIn PDF document text
    • https://tololomajaju.weebly.com/uploads/1/3/4/4/134472688/3461879.pdfIn PDF document text
    • https://cdn.sqhk.co/wabasenenem/3Swhdxt/first_aid_suppliers_near_me.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/kujapomib/bandhan_film_song_pagalworld.pdfIn PDF document text
    • https://cf2e1f24-e5f1-4289-9567-3affce9c164e.filesusr.com/ugd/a4ea6c_2e775644e8af4be5915c77898c16cb5c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/35753184734.pdfIn PDF document text
    • http://zikinevubebera.epizy.com/wokowovumerodomakuve.pdfIn PDF document text
    • https://fa53e508-d88d-41cb-897c-7a5b6f1bfcc3.filesusr.com/ugd/361045_b6a2a9a3f77f42c2b5bb146e0125ee24.pdf?index=trueIn PDF document text
    • http://femagela.myartsonline.com/sedona_method_release_technique.pdfIn PDF document text
    • http://zutibebasonuf.epizy.com/bam_bam_bhole_english_song.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/arduino_uno_oscilloscope.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e237.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE237 5184 bytes
SHA-256: 8b5a27d74edb9cdea4d91daa3bd6614f70ca233307b9cd32ce4ca2b53d19fcce
font_01_sfnt_off0000f3e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3E6 10404 bytes
SHA-256: 24580056d628e3dad825b436287abaf7d66f8d872f8f0952618db07daf50aedb
font_02_sfnt_off00011794.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11794 16164 bytes
SHA-256: 6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3
font_03_sfnt_off00012ca9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CA9 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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